Synthesis and VOCs adsorption properties of Diatomite/FAU-type zeolite composites

IF 2.8 3区化学 Q3 CHEMISTRY, PHYSICAL

Chemical Physics Letters Pub Date : 2024-09-24 DOI:10.1016/j.cplett.2024.141654

Yutong Liu , Yong Qiu , Qi Zhu , Tao Tian

引用次数: 0

Abstract

Adsorption technology utilizing zeolites as adsorbents is a highly efficient and cost-effective method for controlling the emission of volatile organic compounds (VOCs). Herein, two hierarchical diatomite/FAU-type zeolite composites were synthesized by a seeding-assisted secondary hydrothermal growth method and high-temperature hydrothermal dealumination, respectively. The adsorption properties of the composites for VOCs, such as toluene, ethyl acetate, n-heptane, methanol and acetone, were systematically evaluated. The pseudo-second-order model provided a perfect fit to adsorption kinetics, while the Langmuir model agreed the best with the adsorption isotherms. Furthermore, Dt/USY has remarkable recycling stability even after five regeneration cycles, resulting in outstanding VOCs adsorption efficacy.

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硅藻土/FAU 型沸石复合材料的合成与 VOCs 吸附性能

利用沸石作为吸附剂的吸附技术是控制挥发性有机化合物（VOC）排放的一种高效、经济的方法。本文分别采用播种辅助二次水热生长法和高温水热发烟法合成了两种分层硅藻土/FAU型沸石复合材料。系统评估了复合材料对甲苯、乙酸乙酯、正庚烷、甲醇和丙酮等挥发性有机化合物的吸附性能。伪二阶模型完美地拟合了吸附动力学，而朗缪尔模型与吸附等温线的吻合度最高。此外，即使经过五个再生周期，Dt/USY 仍具有显著的循环稳定性，从而实现了出色的 VOCs 吸附效果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemical Physics Letters 化学-物理：原子、分子和化学物理

CiteScore

5.70

自引率

3.60%

发文量

798

审稿时长

33 days

期刊介绍： Chemical Physics Letters has an open access mirror journal, Chemical Physics Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Chemical Physics Letters publishes brief reports on molecules, interfaces, condensed phases, nanomaterials and nanostructures, polymers, biomolecular systems, and energy conversion and storage. Criteria for publication are quality, urgency and impact. Further, experimental results reported in the journal have direct relevance for theory, and theoretical developments or non-routine computations relate directly to experiment. Manuscripts must satisfy these criteria and should not be minor extensions of previous work.